Omega Speaker Systems HH303 - Manual (Page 6)

Type K J Thermometer
III. Symbol Definition and Button
Location:
Main Display Second Display
---- :This indicates that the minus temperature is sensed.
:Centigrade and Fahrenheit indication.
:Thermocouple Type Indication
:This indicates that the display data is being hold.
:The Maximum value is now being displayed
:The Minimum value is now being displayed
:The Average value is now being displayed.
:The reading is now under Relative Mode.
:The Battery is not sufficient for proper operation.